The app warranted a mention in Wednesday’s Windows Phone Summit, where it was revealed that Audible was also playing some mysterious role in the evolution of Microsoft’s voice control and speech capabilities for Windows Phone, which debuted over a year before Siri. (A decade before Siri, really, when you factor in the Windows Mobile versions of this technology.) Microsoft also posted a short mention of it on the Windows Phone Blog today.

I do have a bit more information, however, thanks to a helpful beta tester.

According to Audible, the 1.0 version of the app doesn’t include all the features that they intended. Only a few coming features were mentioned, including periodical support and an optimized Bluetooth experience. Audible is currently beta testing newer builds with these and other new features.

Windows Phone (7.x and 8 both) needs the capability for double-speed, or (ideally) variable-speed playback of audiobooks and podcasts.
The Audible app is no exception -- it needs at least double-speed playback capabilities.

Glad to know they are aware that the Bluetooth experience is poor- I've only found the TWiT app to be a worse experience on BT. Not that it keeps me from using both, lol. Hopefully the updates optimizing that experience come soon!

I'm just glad it's finally here. My Zune's battery finally gave out.
As for the double speed, it is listed on the apps news post that it is one of the features it's working on, and background downloading would be nice.
Been jonesing for my audible for a few months now, it just doesn't work on my tablet that well.